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By default, nbconvert (which is used to execute the notebooks during the Sphinx build process) will give a cell 30 seconds to execute before it times out.
nbconvert
If you would like to change the amount of time given for a cell, you can change the timeout length for all notebooks by setting the following option in conf.py:
nbsphinx_timeout = 60
Or change the timeout length on a per-notebook basis by adding this to the notebook’s JSON metadata:
"nbsphinx": { "timeout": 60 },
The timeout is given in seconds, use -1 to disable the timeout.
-1
Alternatively, you can manually execute the notebook in question and save the results, see the pre-executed example notebook.
Note:
It would make more sense to disable the timeout by default, but this problem has not yet been fixed in nbconvert, see https://github.com/jupyter/nbconvert/issues/791.